Vaguely related; will the re-re-printing of Shocklands lower their value? I need to pick up like, 30*, and RTR didn't actually affect their value very much.

*I have a full playset of 40, which is as it happens exactly enough for two- and three-colour decks (i.e. Temple Garden goes in Selesnya, Naya, Abzan, and Bant) but now I'm building five four-colour decks and they want 6 of them each.....

The guy I trust thinks they'll drop (at least temporarily); he said $5-10 near term

RTR did actually tank prices pretty hard. A lot of people panic dumped the old ones, and then it got drafted the heck out of, so there were lots of new ones circulating too. They didn't stay down for long 'cause it was a popular Standard and Modern was growing astronomically quick.

The old ones indeed dropped hard. New ones could all be had under $10 at a point, though you may have had to search for them (AKA not at the default big stores). People in mtg finance circles were not happy with them as the RTR ones did not go up in price as quickly or as much as they had expected based on the original prices of the RAV ones. They were considered a failed spec by most, though they did well for me.

Short term I could see a drop below $5, long term probably $5-10 and then stable until beyond rotation and then they may increase a bit over time as supplies dwindle (this is for the new print, older ones will remain higher). I expect their behavior to broadly align with pattern the painlands showed back in the day (though at a bit higher average value).

FWIW: I think it's too early for yet another reprint, but apparently Wizards doesn't agree.

_________________I'm a gabber and I feel alrightI sleep all day and I dance all nightI'm a gabber and I feel OKI dance all night and I sleep all day

I checked with a Modern player. You can use Snow-Covered Mountain with Skred and Snow-Covered Island with Gifts Ungiven (fetch a regular island and a snow-covered island). Skred Red also plays Scrying Sheets since it helps them get card advantage.

They're the two most expensive CSP snow-covered basic lands at $3.80 and $2.50 respectively, while all the others are at the $1 mark, so that might explain the discrepancy.